It is for secondary children aged 11 to 16 whose mother tongue is English. The whole set of teaching materials is divided into levels (Volume One, Volume Two and Volume Three). Each level consists of a studentís book and a teacherís book (which combines teacherís guidance book and book of exercises into one ). The whole set consists of six volumes and each volume can be used for a year, and the suggestion class hours are 90-100, to be adjusted according to actual conditions of the students and the teaching. Also there are accessory teaching materials such as Chinese character cards, phrasal cards, classroom wall illustrations and CDs.